package edu.fdzc.big_event.interceptors;

import edu.fdzc.big_event.utils.JwtUtil;
import edu.fdzc.big_event.utils.ThreadLocalUtil;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import java.util.Map;

@Component
public class LoginInterceptor implements HandlerInterceptor {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
//        return HandlerInterceptor.super.preHandle(request, response, handler);
        String thoken = request.getHeader("Authorization");
        try{

            //从regis 中获取相同thoken,
            ValueOperations<String, String> operations = stringRedisTemplate.opsForValue();
            String redisThoken = (String) operations.get(thoken);
            if(redisThoken == null){
                throw new RuntimeException();//抛出异常
            }
            Map<String , Object> claims = JwtUtil.parseToken(thoken);


            ThreadLocalUtil.set(claims);

            return true;
        }
        catch (Exception e){
            response.setStatus(401);
            return false;
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        ThreadLocalUtil.remove();
    }
}
